Electric heater



Nov. -4 1924.

1,514,287 L P. HYNES ELECTRIC HEATER Filed Aug. 19, 1922,

.I I I 'L': 11117: I l if@ Z I Patented Nov. 4, 1924.

UNITED STATES PATENT OFFICE.

LEE P. HYNES, OF ALBANY, NEW' YORK, ASSIGNOR TO CONSOLIDATED CAR-HEATINGCOMPANY, OF ALBANY, NEIV YORK, A CORPORATION OF WEST VIRGINIA.

ELECTRIC HEATER.

Application led August 19, 1922,

To all whom t may concern:

Be it known that I, LEE P. I-IYNEs, a citizen of the United States,residing at Albany, in the county of Albany and State of New York, haveinvented certain new and useful Improvements in Electric Heaters, thefollowing being a full, clear, and exact disclosure of the one form ofmy invention which I at present deem preferable.

For a detailed description of the present form of my invention,reference may oe had to the following specification and to theaccompanying drawings forming a part thereof, wherein-e` F ig. l is aperspective partly in section showing' the general character of myconstruction,

Fig. 2 illustrates the mode of mounting the heater,

Fig. 3 is a plan of my device,

Fig. 4 a side view and Fig. 5 an end view thereof.

My invention includes the inode of supporting a removable-coil heaterand also the mode of mounting a heater under the seat of a railway car.The heater to which my invention is applied is of a kind invented by me,but not claimed herein, which contains a separable coil of wire threadedloosely into a tube of refractory insulation that is encased in a sheetmetal tube. The coil terminals are permanently secured to the respectiveends of the coil and project therefrom through an insulating plug in theend of the metal tube. A heater of this kind I now purpose to support bymeans of brackets secured to the ends of the respective plugs aforesaidby means of an insulating` bushing inserted in a recess in the outer endof the plug. The terminal contact rod passes axially through the plugand bushing and the lead wire is connected to the end of said rod bynuts and washers.

A heater, such as the one just described, is secured to the under sideof a plate of polished aluminum which acts as a reflector of heat and aprotector of the car seat above it.` The reflector plate, together withtwo heaters mounted as aforesaid on its under side, is placedhorizontally between the two angle bars of the seat frame, above whichlies the removable seat cushion. Below the said angle bars a guard issupported thereby consisting of four arched straps with ar pair SerialNo. 583,042.

of similarly arched plates secured thereto longitudinally and havingtheir edges spaced apart Yfrom each other and from the yangle bars aboveto provide for the flow of air over the heaters.

Referring to the drawings, particularly F ig. 2, A represents a sheetmetal tube compressed toform wings or ribs on diametrically oppositesidesA thereof. Inside of and closely iitting the tube A, is aninsulating tube B, preferably of porcelain and in sections. A separableheater-coil S is threaded through tube B and held extended therein undertension by means of connector-1ods l) to which the ends of coil S arepermanently secured. A perforated insulating plug C is screwed into thescrew-threaded end of metal tube A with a recess in its outer end intowhich a headed bushing E of insulation is driven. Between the outer faceof plug C and the inner face of the head of bushing E is the angularbracket F which is of sheet metal, the vertical leg of the bracket beinglerforated to receive the shank of bushing E, while the horizontal legis screwed to the under side of a support, such as the plate G. By thissimple and cheap device applied to each end the heater is securelymounted. Moreover the tube or shell A is effectively insulated, not'only from the heater-coil S but also from the bracket F, and no furthercasing is required. This heater is to be contrasted with the standardelectric car-heater now in almost universal use, wherein a bare coil iswound on a grooved porcelain roller which is considerably more indiameter than the spread of the flanges on the aforesaid tube or shellA. The exposed coil necessitates a large external casing for safety fromelectric contact, whereas, my above-described heater and mounting iselectrically harmless without any casing at all. In some instances,however, a guard of some sort is desirable for mechanical protection ofthe heater itself and to give direction to the air circulation over it.One such instance is an electric heater under the cross seat of a carfor which I have devised the arrangement shown in my drawings. In F ig.l P P are the two angle rails of an ordinary seat frame extendingparallel with the seat and carrying a removable seat cushion above themin a well known manner. Between these two rails I extend a fiat sheet Gof aluminum polished on its under side whichmbetween said braclet andsaid terminal conconstitu't'es an effective heat-screen for the` seatcushion and also reflects the heat radiation intor the air currents.Thisvv plate G fits between the horizontal portions of the angles P'Pand may be readily' removed when the seat cushion is liftedindependently of the angles by removing the screws 2, 2. On the underside of sheet G l mount two of the aforesaid heaters by the describedangle- Vsupports F, F. Under these heaters is a guard formed by fourarched straps K, l, etc., whicli,a1s appear in Figs. 3 and l, haveslotted ends which are bolted to the under sides of the aforesaidangle-rails l, l), of the 'seat frame.y C, G are two longitudinal stripsor plates fitted on the outside of the four strips or plates l, K, K, K,with stiffening flan-ges on their parallel edges. A slot or space .isleft between the adjacent lower edges ofthe plates 0, O, vthrough whichair may Ienter from below as indicated by an arrow in F ig. l, while theupper edges 'of the plates are spaced. away from the 'adjacentangles P,P to form horizontal exit ways for the air, indicated by thehorizontalarrow-s in Fig. l, that rises up from below through the slot justmentioned. lt will be observed that the plate Gr aforesaid is screwed tothe arched straps K, K, etc., and that one end of plate G, Viz, the partthereofv marked G1 in Fig. S, is cut ed and secured separately to thestraps K, l, etc. Moreeyer, the endsof plates t), (l, are connected by aplate @l in which there is a hole formed for the admission of theconduit containing the two wires. rlherefore, so

' lon-g as the heater is in place it is only necessary to lift up theaforesaid enr section G1 of plate G to give access to the lead wires andpermit their connection to the aforesaid terminal rods D', D r-especi'v'ely. Since at the rear 'end of theheater the rods D, D' areconnected by a cross-'piecer D1, the circuit through the two coils inseries is established by this connection 'of the two lead wires to tlrerespective rods D, D.

What l I'ela/im as new `and desire to secur by Letters Paten-t is i l.An lelectric heater comprising a metallic shell, av refractory insulatngtube within said shell, a separablecoil within said tube, an insulatingplug in the end of the metallic sli-ell, and la supporting bracketmounted on said plug.

2. An electric heater comprising metallic shell, fa refractoryinsulating tube within saidvsihe'lfl, a separable coil within said tube,an insulating plug in the end of the shell, a terminal connector for thecoil extending through said plug, 'a supporting bracket outside ofsaidzplug, and an insulating bushing iector.

:in electric heater comprising a metallic shell, a refractory insulatingtube within said shell, a separable coil within said tube, a terminalconnector for said coil extending outside of said shell, a supportingbracket at the end of the shell and insulation between said bracket andthe shell and between said bracket and-the terminal connector.

l. A metallic plate adapted to lie between the longitudinal frame-barsof a car seat,` an electric heater mounted on the under side of saidplate, and a metallic guard beneath said heater mounted on saidframe-bars independently of said plate.

5. A metallic plate' adapted to lie between the longitudinal frame-barsof a car seat,Y an electric heater mounted on the under side of saidplate and removable therewith, and a metallic guard beneath said heatermounted on f the said frame-bars and carrying the said plate.

6. A. metallic plate adapted to lie between the longitudinal frame-barsof a carseat, an electric heater beneath said plate, transverse strapsbetween said frame-bars below the heater, and a longitudinal platemounted on said straps.

7. A metallic plate adapted to lie between the longitudinal frame-barsof a car sea-t and having a separately-removable end section, anelectric heater below said plate, a metallic guard below said heater andmounted on said frame-bars, and leading-in conductors connecting withthe heater terminals at a point below the said separately-removablesection of the plate.

8. A metallic plate adapted to lie between the longitudinal frame-barsof a car seat, an electric heater mounted onthc under side of saidplate, transverse straps extending between said frame-bars andVsupporting said plate, and spaced-apart plates on said straps below theheater and parallel to said framebars.

9, if-'iinetallic plate adapted to the l'ongitudinal frame-bars of a carseat, two parallel electric-heater sections mounted on the under side ofsaid plate, a separately removable section of said plate at one end or'the heater sections, a connection between the two heater coils at oneend, and connections at the opposite end and below said remov ableplate-section between the leading-in wires and the respective terminalsof the heater coils.

Signed at Albany, county of Albany, and State of New York, this 16th dayof August, 1922.

L. r. urines.

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